You can export mails, but only if you're on a paid plan.
Then you can install Proton Mail Bridge (which exposes a fake IMAP server to your machine) and a mail client (e.g. Thunderbird). Then you move all your mail from Proton to your new service by drag-n-dropping inside of your mail client.
I did it in order to move to Mailbox.org (great service), exactly because I don't want to give money to a company run by a Trump supporter.
Also, get ready to receive replies in which they tell you "Ackchyually he's not a trump supporter!!!1"
> You can export mails, but only if you're on a paid plan.
GDPR to the rescue: You have the right to data portability. All UK/EU email providers offer this (and any that don't may need a polite reminder for them to play ball).
There is a local bridge which transparently communicates between Proton’s encrypted servers and offers imap locally. Only on non-mobile OSs afaik. [0]
I'll be the "Ackchyually" person for those who don't know. Proton tweeted support for a _single_ thing the Trump administration did, on a subject that mattered to Proton. Otherwise, they have a strict neutrality position, and their CEO responded to the accusations on Reddit.
Do you have any proof or are you still referring to that one tweet from very long ago, where he did not praise Trump but some action Trump took that was actually good (I know, when you're polarized enough it's hard to think in such terms).
Then you can install Proton Mail Bridge (which exposes a fake IMAP server to your machine) and a mail client (e.g. Thunderbird). Then you move all your mail from Proton to your new service by drag-n-dropping inside of your mail client.
I did it in order to move to Mailbox.org (great service), exactly because I don't want to give money to a company run by a Trump supporter.
Also, get ready to receive replies in which they tell you "Ackchyually he's not a trump supporter!!!1"